Erceg (back) threw live batting practice Friday and is set to begin a rehab assignment with Triple-A Omaha on Sunday, MLB.com reports.

Wright (shoulder) struck out five and gave up one hit and one walk over 3.2 innings in a rehab start for Triple-A Omaha on Wednesday.

Harvey (right teres major strain) is still dealing with soreness in his shoulder, the Kansas City Star reports. "He's not throwing off the mound and he is continuing to play catch to keep his arm going. But we need to get all the symptoms out of there before we progress," said manager Matt Quatraro.

Avila was reassigned to minor-league camp by the Royals on Sunday.

MItchell is experiencing lingering soreness in his broken right hamate bone and hasn't played in a game since May 13, MLB.com reports.

The Royals are expected to transfer Long's rehab assignment from the rookie-level Arizona Complex League to Triple-A Omaha on Friday.

The Royals reassigned Castro to minor-league camp Tuesday.

Lacy announced Tuesday via his personal Instagram account that he underwent Tommy John surgery, Anne Rogers of MLB.com reports.

Hernandez signed a minor-league contract with the Royals on Saturday.

Marsh (shoulder) started a new throwing program on April 25, MLB.com reports.

McArthur (elbow) continues to rehab in Kansas City but hasn't progressed quickly and is not throwing yet, MLB.com reports.

The Royals acquired Mateo from the Astros on Wednesday in exchange for Dylan Coleman, Anne Rogers of MLB.com reports.